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Old 12-04-2015, 10:40 AM   #1
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2003 Magna Tag Axle Operation

I'm asking for help from you CC experts to expand a bit more than the coach manuals offer on tag operation. All I can find in the manuals (coach manual) is the tag rocker switch on the console to the left of the driver raises and lowers when the switch is moved to the front or the back. Nothing at all offered in the chassis manual.

I think I found the device in one of the bays where you can adjust the air bag pressure in the tag bags.

So, unknown to me, a first time tag coach owner:

Does the engine have to be running to operate the tag; or does the ignition switch need to be on?

Is there any info out there, relative to my coach, on the balancing of tag bag pressure and the weight you have on the tag; or balancing the front axel, to the ensure it is not overloaded, and adding/taking away tag bag pressure.

I realize that I need to weigh all three axles to determine the loads.

I guess what I am asking for, other than basic CC instructions, is for some sort of chart that will show the tag pressure setting relative to the load on the tag.

I know this is elementary to you experienced CC guys.

Phil
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Old 12-04-2015, 09:13 PM   #2
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On mine, I have a switch one the left of the driver to raise or lower the tag. Of course mine is a few years younger than yours. Perhaps someone with your year and model may chime in.
Enjoy your fine coach!
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Old 12-05-2015, 01:00 AM   #3
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On mine the tag switch in one position keeps the tag down at all times. In the other position it raises when the parking brake is off and im going less then 10 miles an our or so. In this position as I come to stop the tag lifts automatically and drops when I make the corner and speed up.
The air regulator determines the load on the tag. The higher the pressure the more load the tag takes. This also effects the load on the front axle. I would not adjust unless I was on a scale. With rig fueled and watered up and knowing the axle limits the tag can be adjusted accordingly then left alone.
My rig is 17800 front 20750 drive and 10500 tag. I could for example increase load on tag to say 11250 reducing drive to 20k or so but would also add a few hundred pounds to the front.
If I were you I would run over a scale and note your loads to see if anyone has played with the regulator then adjust accordingly if at all. It seems to me these rigs struggle to keep the front axle loads within acceptable limits.
Hope this helps.
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Old 12-05-2015, 01:27 AM   #4
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Originally Posted by IASM View Post
It seems to me these rigs struggle to keep the front axle loads within acceptable limits.
And the reason for the 365/70's w/10" wide rims on the Magna's from 6986 and after.
We're at 18,030 when loaded and both of us aboard, but the front axle and tires are rated for 20,000#'s
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Old 12-05-2015, 09:04 AM   #5
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On mine the tag switch in one position keeps the tag down at all times. In the other position it raises when the parking brake is off and im going less then 10 miles an our or so. In this position as I come to stop the tag lifts automatically and drops when I make the corner and speed up.
The air regulator determines the load on the tag. The higher the pressure the more load the tag takes. This also effects the load on the front axle. I would not adjust unless I was on a scale. With rig fueled and watered up and knowing the axle limits the tag can be adjusted accordingly then left alone.
My rig is 17800 front 20750 drive and 10500 tag. I could for example increase load on tag to say 11250 reducing drive to 20k or so but would also add a few hundred pounds to the front.
If I were you I would run over a scale and note your loads to see if anyone has played with the regulator then adjust accordingly if at all. It seems to me these rigs struggle to keep the front axle loads within acceptable limits.
Hope this helps.
Where is the adjustment located? Thanks
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Old 12-05-2015, 05:08 PM   #6
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On mine its in front of the rear drive dual on passenger side. Got to get under a bit to see it.
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Old 12-05-2015, 07:29 PM   #7
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Thanks everyone for keeping the tag advice coming.

I haven't seen a pressure gauge for the tag, only a dial adjustment in one of the driver side bays. Don't know what the numbers on the dial represent, maybe psi. That would make sense, but would like to see a gauge. Weird that CC didn't include tag instructions along with the volumes of other good info in the coach.

And thanks for whoever fixed my spelling error. I posted too quickly, and although the site instructions says you can edit your post I couldn't find the button to do so.

Phil
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Old 12-06-2015, 12:22 AM   #8
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there is no ride height adjustment on a tag so it is always holding the same load based on the pre-set pressure via a regulator. To be legal this adjustment has to be outside the cab so a driver cant manipulate under way. This is not something I would think the manufacture would want to be adjusted by the consumer. Alignment ,ride height and tag load kind of go hand in hand.
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Old 12-06-2015, 07:44 PM   #9
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On mine its in front of the rear drive dual on passenger side. Got to get under a bit to see it.
Thanks, IASM! I appreciate that.
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